I was hoping to write John a letter rather than add to his e-mail inbox; it's not regarding a purchase. I've hit a bit of a "whistlemaker's block" trying to improve the volume of my latest model, which is nearly perfect but for being too quiet for even a small session. I was curious if he'd share advice with a young maker, and it feels more personal to write a letter since I really admire his sound and approach to the craft.